New York (CNN) -- As the Occupy Wall Street protesters rally for a third week, social media sites such as Twitter seem to be spurring similar protests in other cities. A Twitter account called Occupy Boston mentions a citywide college walkout there Wednesday. Meanwhile, the Massachusetts Nurses Association says hundreds of the city's nurses will rally with the Occupy Boston protesters on Wednesday. The association says the protest will be part of the opening day activities for a national nursing convention in Boston.